Mac: Split Window

Freeware application TwoUp for Mac has only one purpose - to split windows evenly. Rather it's horizontal or vertical - it can be done via a shortcut (hotkeys). This feature, similar to “window tiling” in other operating systems, is missing from the otherwise rich Mac OS X interface.

For more features such as Full Screen and Multiple Monitor Support, you might try SizeUp, the bigger brother of Twoup.

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